I gave the Cambridge Dictionary definition of what a teenager means in the photo, which is the true definition. Again, you said they were underage, and I asked where it said that because it did not state any age; however, multiple sources and the IDF itself explicitly state that military recruits are at least 18 years old.
I do not wish to prolong this any longer, since you cannot provide credible proof that you are right. I hope you have a great day.